%0 Journal Article %1 Akasaka2011 %A Akasaka, Ryo %D 2011 %I Springer Netherlands %J International Journal of Thermophysics %K 2011 Helmholtz equation-of-state mathematics optimization properties refrigeration %P 1-23 %R 10.1007/s10765-011-0992-0 %T New Fundamental Equations of State with a Common Functional Form for 2,3,3,3-Tetrafluoropropene (R-1234yf) and trans-1,3,3,3-Tetrafluoropropene (R-1234ze(E)) %U http://dx.doi.org/10.1007/s10765-011-0992-0 %X New fundamental equations of state explicit in the Helmholtz energy with a common functional form are presented for 2,3,3,3-tetrafluoropropene (R-1234yf) and trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)). The independent variables of the equations of state are the temperature and density. The equations of state are based on reliable experimental data for the vapor pressure, density, heat capacities, and speed of sound. The equation for R-1234yf covers temperatures between 240 K and 400 K for pressures up to 40 MPa with uncertainties of 0.1\% in liquid density, 0.3\% in vapor density, 2\% in liquid heat capacities, 0.05\% in the vapor-phase speed of sound, and 0.1\% in vapor pressure. The equation for R-1234ze(E) is valid for temperatures from 240 K to 420 K and for pressures up to 15 MPa with uncertainties of 0.1\% in liquid density, 0.2\% in vapor density, 3\% in liquid heat capacities, 0.05\% in the vapor-phase speed of sound, and 0.1\ % in vapor pressure. Both equations exhibit reasonable behavior in extrapolated regions outside the range of the experimental data.

@article{Akasaka2011, abstract = {New fundamental equations of state explicit in the Helmholtz energy with a common functional form are presented for 2,3,3,3-tetrafluoropropene (R-1234yf) and trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)). The independent variables of the equations of state are the temperature and density. The equations of state are based on reliable experimental data for the vapor pressure, density, heat capacities, and speed of sound. The equation for R-1234yf covers temperatures between 240 K and 400 K for pressures up to 40 MPa with uncertainties of 0.1\% in liquid density, 0.3\% in vapor density, 2\% in liquid heat capacities, 0.05\% in the vapor-phase speed of sound, and 0.1\% in vapor pressure. The equation for R-1234ze(E) is valid for temperatures from 240 K to 420 K and for pressures up to 15 MPa with uncertainties of 0.1\% in liquid density, 0.2\% in vapor density, 3\% in liquid heat capacities, 0.05\% in the vapor-phase speed of sound, and 0.1\ % in vapor pressure. Both equations exhibit reasonable behavior in extrapolated regions outside the range of the experimental data.}, added-at = {2011-05-09T17:03:18.000+0200}, affiliation = {Department of Mechanical Engineering, Faculty of Engineering, Kyushu Sangyo University, 2-3-1 Matsukadai Higashi-ku, Fukuoka, 813-8503 Japan}, author = {Akasaka, Ryo}, biburl = {https://www.bibsonomy.org/bibtex/2b43a4af17c98ae36b826f1fa92e0040e/thorade}, description = {SpringerLink - International Journal of Thermophysics, Online First™}, doi = {10.1007/s10765-011-0992-0}, interhash = {f5611449e0f47c24ebe422b8a90d41a3}, intrahash = {b43a4af17c98ae36b826f1fa92e0040e}, issn = {0195-928X}, journal = {International Journal of Thermophysics}, keyword = {Physics and Astronomy}, keywords = {2011 Helmholtz equation-of-state mathematics optimization properties refrigeration}, pages = {1-23}, publisher = {Springer Netherlands}, timestamp = {2011-07-21T09:54:57.000+0200}, title = {New Fundamental Equations of State with a Common Functional Form for 2,3,3,3-Tetrafluoropropene (R-1234yf) and trans-1,3,3,3-Tetrafluoropropene (R-1234ze(E))}, url = {http://dx.doi.org/10.1007/s10765-011-0992-0}, year = 2011 }